/**
 * $Id: rand.c 17433 2008-11-12 21:16:53Z blendix $
 *
 * ***** BEGIN GPL LICENSE BLOCK *****
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
 * All rights reserved.
 *
 * The Original Code is: all of this file.
 *
 * Contributor(s): none yet.
 *
 * ***** END GPL LICENSE BLOCK *****
 */

//#include <stdlib.h>
//#include <string.h>
//
//#include "MEM_guardedalloc.h"
//
//#include "PIL_time.h"
//
//#include "BLI_threads.h"
//#include "BLI_rand.h"
//
//#ifdef HAVE_CONFIG_H
//#include <config.h>
//#endif
//
package blender.blenlib;

public class rand {
//#if defined(WIN32) && !defined(FREE_WINDOWS)
//typedef unsigned __int64	r_uint64;
//
//#define MULTIPLIER	0x5DEECE66Di64
//#define MASK		0x0000FFFFFFFFFFFFi64
//#else
//typedef unsigned long long	r_uint64;
//
//#define MULTIPLIER	0x5DEECE66Dll
//#define MASK		0x0000FFFFFFFFFFFFll
//#endif
//
//#define ADDEND		0xB
//
//#define LOWSEED		0x330E
//
///***/
//
//struct RNG {
//	r_uint64 X;
//};
//
//RNG	*rng_new(unsigned int seed)
//{
//	RNG *rng = MEM_mallocN(sizeof(*rng), "rng");
//
//	rng_seed(rng, seed);
//
//	return rng;
//}
//
//void rng_free(RNG* rng)
//{
//	MEM_freeN(rng);
//}
//
//void rng_seed(RNG *rng, unsigned int seed) {
//	rng->X= (((r_uint64) seed)<<16) | LOWSEED;
//}
//
//void rng_srandom(RNG *rng, unsigned int seed) {
//	extern unsigned char hash[];	// noise.c
//
//	rng_seed(rng, seed + hash[seed & 255]);
//	seed= rng_getInt(rng);
//	rng_seed(rng, seed + hash[seed & 255]);
//	seed= rng_getInt(rng);
//	rng_seed(rng, seed + hash[seed & 255]);
//}
//
//int rng_getInt(RNG *rng) {
//	rng->X= (MULTIPLIER*rng->X + ADDEND)&MASK;
//	return (int) (rng->X>>17);
//}
//
//double rng_getDouble(RNG *rng) {
//	return (double) rng_getInt(rng)/0x80000000;
//}
//
//float rng_getFloat(RNG *rng) {
//	return (float) rng_getInt(rng)/0x80000000;
//}
//
//void rng_shuffleArray(RNG *rng, void *data, int elemSize, int numElems)
//{
//	int i = numElems;
//	void *temp = malloc(elemSize);
//
//	while (--i) {
//		int j = rng_getInt(rng)%numElems;
//		if(i!=j) {
//			void *iElem = (unsigned char*)data + i*elemSize;
//			void *jElem = (unsigned char*)data + j*elemSize;
//			memcpy(temp, iElem, elemSize);
//			memcpy(iElem, jElem, elemSize);
//			memcpy(jElem, temp, elemSize);
//		}
//	}
//
//	free(temp);
//}
//
//void rng_skip(RNG *rng, int n)
//{
//	int i;
//
//	for(i=0; i<n; i++)
//		rng_getInt(rng);
//}
//
///***/
//
//static RNG theBLI_rng = {0};
//
///* note, this one creates periodical patterns */
//void BLI_srand(unsigned int seed) {
//	rng_seed(&theBLI_rng, seed);
//}
//
///* using hash table to create better seed */
//void BLI_srandom(unsigned int seed) {
//	rng_srandom(&theBLI_rng, seed);
//}
//
//int BLI_rand(void) {
//	return rng_getInt(&theBLI_rng);
//}
//
//double BLI_drand(void) {
//	return rng_getDouble(&theBLI_rng);
//}
//
//float BLI_frand(void) {
//	return rng_getFloat(&theBLI_rng);
//}
//
//void BLI_fillrand(void *addr, int len) {
//	RNG rng;
//	unsigned char *p= addr;
//
//	rng_seed(&rng, (unsigned int) (PIL_check_seconds_timer()*0x7FFFFFFF));
//	while (len--) *p++= rng_getInt(&rng)&0xFF;
//}
//
//void BLI_array_randomize(void *data, int elemSize, int numElems, unsigned int seed)
//{
//	RNG rng;
//
//	rng_seed(&rng, seed);
//	rng_shuffleArray(&rng, data, elemSize, numElems);
//}
//
///* ********* for threaded random ************** */
//
//static RNG rng_tab[BLENDER_MAX_THREADS];
//
//void BLI_thread_srandom(int thread, unsigned int seed)
//{
//	extern unsigned char hash[];	// noise.c
//
//	if(thread >= BLENDER_MAX_THREADS)
//		thread= 0;
//
//	rng_seed(&rng_tab[thread], seed + hash[seed & 255]);
//	seed= rng_getInt(&rng_tab[thread]);
//	rng_seed(&rng_tab[thread], seed + hash[seed & 255]);
//	seed= rng_getInt(&rng_tab[thread]);
//	rng_seed(&rng_tab[thread], seed + hash[seed & 255]);
//}
//
//int BLI_thread_rand(int thread) {
//	return rng_getInt(&rng_tab[thread]);
//}
//
//float BLI_thread_frand(int thread) {
//	return rng_getFloat(&rng_tab[thread]);
//}
}
